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AISI 347LN Stainless Steel vs. Grade 6 Titanium

AISI 347LN stainless steel belongs to the iron alloys classification, while grade 6 titanium belongs to the titanium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 347LN stainless steel and the bottom bar is grade 6 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 40
11
Fatigue Strength, MPa 200
290
Poisson's Ratio 0.28
0.32
Reduction in Area, % 56
27
Shear Modulus, GPa 77
39
Shear Strength, MPa 400
530
Tensile Strength: Ultimate (UTS), MPa 590
890
Tensile Strength: Yield (Proof), MPa 230
840

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 940
310
Melting Completion (Liquidus), °C 1430
1580
Melting Onset (Solidus), °C 1380
1530
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 15
7.8
Thermal Expansion, µm/m-K 16
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 18
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.5
30
Embodied Energy, MJ/kg 49
480
Embodied Water, L/kg 150
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
92
Resilience: Unit (Modulus of Resilience), kJ/m3 130
3390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 21
55
Strength to Weight: Bending, points 20
46
Thermal Diffusivity, mm2/s 4.1
3.2
Thermal Shock Resistance, points 13
65

Alloy Composition

Aluminum (Al), % 0
4.0 to 6.0
Carbon (C), % 0.0050 to 0.020
0 to 0.080
Chromium (Cr), % 17 to 19
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 64.3 to 73.7
0 to 0.5
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 13
0
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0.060 to 0.1
0 to 0.030
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
2.0 to 3.0
Titanium (Ti), % 0
89.8 to 94
Residuals, % 0
0 to 0.4